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FNRSI Battery Spot Welder, 5000m Portable Handheld Spot Welder Double Pulse 4 Combination Gears Adjustable Spot Welding 0.1MM-0.25MM for Iron/Stainless Steel/Nickel Strip /18650 Battery Pack

  • Based on 50 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, Jul 16
Order within 10 hours and 11 minutes
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Features

  • Double Pulses WeldingTwo pulses are released simultaneously in welding-one cleans the oxide layer on welderment, reducing the spark spattering, and the other keeps on welding to ensure the consistency of energy output and improvement o f welding stability
  • A-Grade Battery& 2in1 The spot welder is equipped with 2 high rate power A-Grade batteries (5000mAH large capacity) . You could use it to weld thousands of spots after fully charged. And you could also use it as a power bank
  • Adjustable Output& Wide Application4 combination gear adjustment. The welding thickness is 0.1-0.25mm. It can be used to weld nickel sheet, iron sheet, statinless steel sheet, aluminum sheet
  • Brass Spot Welding Pen The head of welding pen is detachable. You don`t need to replace the whole welding pen if the head is damged. And the welding pen is made of brass, solid and endurable!
  • Colorful ScreenWith 1.8 inch LCD colorful screen, shows you the welding status, the battery voltage, temperature, preheat time, pulse time, interval time, charging voltage/current/power and over temperature/low voltage/short circuit warning indicator

Manufacturer: ‎WESTOBIG-FNIRSI


Item Weight: ‎1.23 pounds


Package Dimensions: ‎8.11 x 4.8 x 2.52 inches


Country of Origin: ‎China


Item model number: ‎Swm-10


Batteries: ‎1 Lithium Ion batteries required. (included)


Power Source: ‎Battery Powered


Included Components: ‎Usb Cable, Spot Welder, Nickel Strip


Batteries Included?: ‎Yes


Batteries Required?: ‎Yes


Battery Cell Type: ‎Lithium Ion


Date First Available: December 3, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Great value and exceptional quality
This is an exceptional device for rechargeable battery replacement. No more frustration with trying to get solder to stick to batteries. It is neat, compact, and very easy to use. The design is outstanding. Don’t be intimidated by a lack of knowledge on spot welding. You will quickly learn how to use it and it will pay for itself quickly if you use a fair number of rechargeable batteries. I had never used a spot welder before, and I built my first replacement 3 cell pack within one hour of opening the box. I would only recommend using this for NiMh or NiCd batteries and not for lithium batteries unless you really know what you are doing. The device doubles as a battery bank for times when a spot welder isn’t needed. It comes with a roll of nickel tab stock that can be cut to desired size. Understanding how to use it only takes about 15 minutes on YouTube. Experiment with old cells a few times before you begin using new cells. The device comes with easy to understand instructions regarding making adjustments to settings, and making adjustments is very simple. The only negative thing that I can say is it does not come with recommendations for settings to use, but that information is readily available online and on YouTube, and it is not enough of a negative to subtract a star. This is definitely a 5 star product that comes exceptionally well packaged with a reusable box for storage when not in use. I will definitely look for other products sold by FNIRSI. ... show more
Reviewed in the United States on March 25, 2025 by D. PEARCE

  • Bad*** little welder☆☆☆☆☆
Perfect for battery projects at home. Great power and quality. A good value for the price as well.... Also good battery life.. Definitely recommend
Reviewed in the United States on June 16, 2025 by Cody Saunders Cody Saunders

  • Worth the price, works the weld
This is my second attempt at a battery spot welder. The first came from that Ali place. After receiving this one, I'll need no more. It arrived well packaged and with the shown attachments. First couple tries convinced me it is a keeper. Found using the higher settings with single pattern worked best for all sizes of tabbing. My 18650s are now well connected. ... show more
Reviewed in the United States on May 22, 2025 by Cyber830

  • Not bad. Working
It works good with nickel 0.1 mm Not recommend for 0.15 or thicker
Reviewed in the United States on May 14, 2025 by Al

  • Only buy it if you want an expensive power bank
A complete dud. It is easy to set up but it does not do anything. It will be used as a power bank because it is useless as a spot welder. No matter what setting I use it does not weld or even spark. You can hear a pop inside the unit sometimes but nothing where you are welding. It was a total waste of money for me. I will now have to but another one from someone else. You can hold the tips on the battery connector strips for one second or one minute and get the same result nothing. It looks nice feels good in the hand but in the end it is still nothing. ... show more
Reviewed in the United States on April 13, 2025 by Stewart Purvis

  • I did not expect it to work so well.
With some previous bad experience with Chinese battery spot welders I was very undecided on getting this one. Actually saw it for about $12.00 cheaper on a Chinese outlet, however was not going to take any chances. Paid a bit more on Amazon with certainty I'll be returning it. Besides, it takes weeks to get it from overseas. To my surprise, this unit works way better than I expected. I've been a battery pack welding nut for last few days and this tool works awesome. I'm keeping it. Thanks FNIRSi - well done! ... show more
Reviewed in the United States on February 14, 2025 by Peter R.

  • Works good at default settings but tweaking the will probably be better
Works good so far, very easy to setup and my first battery pack went very easy and quick.
Reviewed in the United States on April 12, 2025 by R. Rinehart

  • Easy to use.
Do not fast charge. If you're doing a big battery build, don't get this one, I had to stop several times to recharge, I recommend looking for a spot welder with a large capacitor instead. It's convenient that it's portable, great in a pinch, but I wouldn't recommend it for long sessions.
Reviewed in the United States on March 27, 2025 by Daniel Kase

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